My track record against Porsches is pretty good, at my last event (a week ago) only one beat me. It was a 914-6 with a big engine and tires wide enough to sleep on. He got me by just under 2 seconds. I did however manage to blow the doors off 2 944 turbos, another 914, and a Gemballa tuned 996. (I beat him by about 5 seconds. Apparently having the $ for one doesn't mean you know how to drive it.)
The course is on one of the runways, and it looks really long. I'm looking forward to using 3rd gear for a change as I've never really had the chance to. The other thing I have going for me is that I'm about a foot narrower than all the other Porsches.
The best thing is that I get to trailer the car down, with both sets of tires. If it rains, I have the street tires, if its dry I have the r-compounds. Because I'm not in contention for a season championship here there is no pressure and lots of seat and tuning time. I'm hoping to gain ideas for car setup that I can carry over to the NORCAL UFO series that I am currently sitting 3rd in with 7 events to go. (I finished 3rd last weekend. It kinda made up for the last place I had in the Alfa back in Feb in the rain, and the 5th place I had back in Jan, also in the rain.)
This should be fun.

Will